Power-transmitter.



M. K. GOLDEN.

POWER TRANSMITTER.

APPLICATION FILED JUNE 20,1908.

Patented Aug. 10, 1909.

cation of my invention.

'. MAXIMILIAN K. eoLnEmoF' SAN FRANoIsoo, CALIFORNIA.

rownn-rnansinrrnn.

' Specification of Letters Patent.

Patented .Aug. 10, {909.

Application filed June 20, '1908. Serial No. 489,486.

To all whom it may concern:

Be it known that I, MAXIMILIAN K. GoL- DEN, citizen ofthe United States, residing in the city and county of San Francisco and State of California, have invented new and t itters, of which the following is a specificaion.

My invention relates to apparatus for transmitting power, and pertains especially to a motor and driving connections for pperating various small machines, and the vire.

The'objectof the invention is to provide a simple, cheap, practical, portable apparatus preferably comprising a small electric motor with variable speed drive connections by which any machine, like a sewing-ma-.

chine or washing-machine, pump, etc, may be operated mechanically; to provide a motor and transmission means which will obviate "the use of any belts; a-ndwhich can be quickly putin position and connected up by any one with the least possibleamount of experience or trouble; and it has other objects and advantages which will be hereinafter made manifest. The invention consists of the parts and the construction and combination of parts as hereinafter more fully. described and claimed, having reference to the accompanying drawings, in which- Figui 1 is a side view showing theappli- Fig. 2 is an end view of same. tion of the switch.- a

While I have shown the invention herein applied to a. sewing-machine, it will be obvious that its uses are manifold; and I do not desire orintend to limit myself to any particular machine 'or to anyparticular use. Arepresents the top of a sewing-machine,

or any other suitable support for my apparatus, which consists of a base 2 0,11 which is mounted a suitable motor 3, preferably an electric motor as here shown, and provided with suitable detachable drive connections with the machine or apparatus'to be driven. The base of my apparatus may be of any appropriate size, style, shape or material; but preferably it is of cast metal, and is provided with a bracket 4 on which is mounted the shaft 5.; the shaft 5 being journaled in suitable bearings on the bracket, and carrying a pulley 6 at one end.

useful Improvements in Power-Trans- Fig. 3 shows the construc-" A friction roller? is slidable lengthwise of theshaft 5-, and is made to rotate there with by suitable means, as the feather and feather-way 8; this roller 7 being movable radially over'the face of a friction disk 9 on the shaft 10 of motor 3. Any appropriate means are employed to normally keep .the friction disk and friction roller in 0 er- -tion disk on a sleeve 11 which is turnable with, but slidable on, the motor shaft 10;- a

-mally to press the disk int'o frictional engagement with the transmission roller 7 when the parts are in operative position. This disk and roller operate in the manner common in such forms of transmission mechanism, to produce variable speedby suitable movement of the roller radially the disk. b 1 d An a ro riate means may e emp oye toeffzct tl ie l adial adjustment of the roller. As here shown, a bell-crank leve 13 is fulcrumed to the bracket, and to one arm of the bell-crank is connected a link 14 which ivotally connects with a'carriage 15 which is slidable on a fixed guide rod 16 and has forked arm's extending on each side of the roller 7, and between which arms the roller turns. The spring 17 operates" on the bellcrank normally to push the carriage 15 to one side, so asto bring the friction roller into the middle of the disk, where it is inoperative and stationary.

Where the apparatus is attached to a sewingmachine, I connect the opposite arm of the bell-crank 13 with the treadle 18 of the machine, by a link or chain 19, so that when the parts are properly assembled, by simply manipulating the treadle with the feet the friction roller 7 is moved back and forth on the friction disk 9 to operate the machine at any appropriate speed.

-Any suitable form of drive connection between the drive-shaft 5 and the part to driven by simply engaging two prongs 90 g crum on the prongs 20, or their-equivalents,

with the motor end of the apparatus sufficiently off of or above the table, whereby the continued frictional contact of the drive pulley 6 with the hand-wheel 21 will be maintained by the weight of the motor.

The motor may be provided with a suitable handle, as 22, by which it can be easily picked up.

The motor is provided with the usual electrical connections, not necessary here to be shown, except that preferably the electric current will be out in or cut out according as the friction roller 7 is moved from or returned to its normal position of rest centrally of the drive disk 9.

Ihave here shown twov carbon switch points 23, one of which is mounted on a switch lever 24 of insulating material, such as fiber. Springs 25 tend normally to carry these contacts into electrical connection, but this electricalconnection is controlled by a pin 26 on the carriage 15 engageable and disengageable with the switch lever 24. That is to say, when the friction roller- 7 is in inoperative central position with respect to the disk 9, the pin 26 will have intercepted the switch lever 24 and separated the contacts 23, so that I no current passes through the motor. The moment, however, that the bell-crank 13 is rocked so as to move the carriage 15, and thereby shift the roller 7 outward radially of the disk 9, the lever 24 is released, closing the circuit between the contacts 23 and cutting in the electric current, thereby setting the motor shaft and friction disk 9 in motion. It will thus be manifest that no power will be used when there is no need for it, and that by the arrangement and connections here shown the operation of the motor is controlled from the treadle of the machine.

Assuming that the invention is applied to a sewing-machine, as here illustrated, the

operation is as follows:

In order to couple the invention to the sewing-machine, the prongs 20 on the-base are simply engaged in the holes in the tabletop, and by the weight of' the motor the friction surface of the i drive pulley 6 is pressed against the wheel 21. The bellcrank 13 is then connected to the treadle by the chain 19, and the necessary electrical connections with the motor made. This apparatus is designed to be attached directly to the lighting arrangement of a house or building. To start the motor and the machine, the treadle is operated to shift the engageable with said driven roller 7 radially of the disk9; the speed at which the machine is operated being regulated according to whether the roller 7 is gealrer to or'farther from the center of the Releasing the ressure on the treadle allows the spring 1 to act to ,return the'roller 7 to the center of the disk, thereby stopping the machine and cutting off the current to the motor.

It is possible that various changes may be made in the details of construction herein shown and described, without departing from the principle of the invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent isy 1. In a power transmitter, the combination of a rotarypart tobe driven, of a rotary driving part frictionally engageable with said driven part, a support for said driving part having a fulcruming movement to carry said driving partto and from said driven part, and -a motor on said support having connection with the driving part.

2. The combination of a rotary part to be driven, a rotary driving part frictionally part, a base having an extended bracket, a shaft mounted crosswise in one end of the bracket, said shaft carrying the rotary driving part, fulcrum members on the under side of the base its fulcrums, said base operatin by gravity to maintain the driving part an driven part in operative engagement.

3; The combination of a rotary part to be driven, a rotary driving part frictionally engageable with said driven part, a support for said driving part havin a fulcrumin movement to carry said driving part to an from said driven part, a motor on said support with suitable connections with said driving part, saidmotor operating by avity on said support to maintain the driving part and the driven part inoperative engagement, and means for cperating sald drivin part at variable spee s.

4.4T e combination of a rotary part to be driven, a rotary driving part frictionally engageable with said driving part, a support for said driving part having a fulcrumin movement to carry said driving part to an from said driven art, a motor on said support with suitab e connections with sa1d driving part, said motor operating by gravity on said sup ort to maintain t e drlvmg part and the riven part in operatrve engagement, switch connections .for' cuttlng the current in and out of the motor, means for shifting said driven part radially of the driving part, and means operative by said shifting means for actuating said switching connections.

5. The combination of a-motor having a motor shaft, a friction disk on the motor shaft, a friction roller movable radially of the friction disk, a drive-shaft on which saidv rolleris slidable and vitlrivhich it is turnable, a, driving-pulley on the drive-shaft, a rotary part to be driven engage-able by said pulley, and means for mounting the motor and said driving connections whereby said drive roller and said part to be driven are maintained in frictional contact by gravity.

(5. The combination with a motor and a shafttherefor, a shaft arranged at rightangles to the motor shaft, arotary driving part thereon, interengaging friction disks between the motor shaft and the secondnamed shaft, means for shifting one of said disks relative to the other for operating the driving part at variable speeds, and a tiltable base upon which the motor is supported, said base having a bracket extension from one end in which the second named shaft is mounted.

- 7 The combination of a rotary part to be driven, a treadle, a portable hand-stand, a

friction roller radially of the friction disk,

said means including a bell crank lever, a

link connecting one end thereof With the friction roller and flexible means connecting the other end of the lever with the treadle,

and electrical connections with the roller controlled by the movement of the friction disk. v

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. MAXIMILIAN lVitnesses:

CHARLES A. ENFIELD, CHARLES EDELMAN.

K. GOLDEN. 

